Towel rack



FIG. 1 is a front elevational view of a towel rack showing my new design, shown broken away to indicate indeterminate length;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is an end elevational view thereof. 

The ornamental design for a towel rack, as shown and described. 